Pulley frame and mounting.



0. H. IMAN.

PULLEY FRAME AND MOUNTING.

APPLICATION FILED NOV. 16, 1914.

1,153,923. PatentedSept. 21, 1915.

2 SHEETS-SHEET 1.

COLUMBIA ILANOGRAIH co., WASHINGTON, D. c.

O. H. IMAN.

PULLEY FRAME AND MOUNTING.

APPLICATION FILED NOV. 16. 1914.

PatentdSept. 21, 1915.

2 SHEETS-SHEET 2.

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ORLA I-I. IlVIAN, OF CHICAGO, ILLINOIS, ASSIGNOR TO VOIGHTMANN &COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

PULLEY FRAME AND MOUNTING.

Specification of Letters Patent.

Patented Sept. 21, 1915.

Application filed November 16, 1914. Serial No. 872,342.

T 0 all whom it may concern.

Be it known that I, OKLA H. IMAN, a citizen of the United States,residing at Chicago, in the county of Cook and State of- Illinois, haveinvented certain new and useful Improvements in Pulley Frames andMountings, of which the following is a specification.

My invention relates to improvements in pulley frames and mountings,and, although susceptible of many applications and for various uses, isparticularly well fitted for use in connection with window casings.

Among the salient objects of the invention are, to provide a pulleyframe of such construction that when the component parts of the frameare assembled together it is impossible for the pulley pin or hearing tobe shaken loose or moved out of its proper position and adjustment;toprovide a pulley frame of such construction that the act of assemblingthe component parts of the frame at the same time locks the pulley andits bearing elements in proper position and correct bearing relation; toprovide a pulley frame which can be manufactured from a comparativelysmall number of parts, and those of simple and economical design; toprovide a pulley mounting of the class described which may be furnishedwith an ordinary plain bearing or with roller bearings with equalfacility; to provide a pulley frame which is of symmetrical design sothat it may be used in any position; to provide a pulley mounting forwindow frames constructed and organized in such a manner as to eliminatewaste space at the top of the window casing; to provide a window casingand pulley mounting so organized as to permit of the pulley frames beinghung from the head of the window; to provide a pulley mounting for awindow casing so organized as to permit of the pulley mounting beingremoved readily without having to operate above the window head; toprovide-a pulley mounting so organized in connection with a windowcasing that the eifective length of the weight-box is a maximum so as topermit the use of an attenuated balance weight; to provide a pulleymounting and window casing construction which shall be simple andeconomical in design while at the same time being practical andefiicient in use; and, in general, to provide improved I constructionsof the types referred to.

The application of my invention may be exemplified by its embodiment ina window casing and pulley mountings therefor which are described hereinand illustrated by the accompanying drawings, in which Figure 1 is anelevation of the corner of a metal window frame shown in section andtaken on the lines 11 of Figs. 2 and 3; Fig. 2 is a section of Fig. 1taken on the line 22; Fig. 3 is a plan view of Fig. 1, certain partsbeing broken away and shown in section; and Fig. 4 is a view showing theparts of the pulley frame disassembled and separated slightly the betterto illustrate the construction.

Referring to the drawings, in the figures 10 represents the inner memberof the top part'of the window casing, this member usually beingdesignated in the trade as a head. This head extends all the way acrossbetween the two outer side members 11 of the window casing and issuitable permanently secured thereto. The inner side member 12 of thewindow casing, however, which in other windows might be termed a pulleystile, is constructed and organized in such a manner that it may bereadily removed bodily from the window casing after the sashes/have beenremoved and thus the weights and cords may be exposed for inspection andrepair.

An important novel meature of my improved construction resides in thefact that the head of the window is extended to theouter side members soas to form a support from which the pulley frames may be detachably hungin a simpleand efiicient manner and in such a position that the headroomtaken up by the window is reduced to the minimum, while at the same timeample vertical space is provided for the weights in the weight boxes. Tothis end I employ the novel and improved form of pulley frame hereinshown, and mount the same in the manner to be described.

Describing the pulley frame, referring to Fig. 4 it will be noticed thatthe frame as a whole is composed of two pressed sheet metal members 13which in the present instance are formed in a substantially similarmanner and shaped to provide opposed pockets 14 which, when the membersare socured together, surround the pulley wheels 15, two of which aremounted in a single frame. These mating pressed metal members 13 areadapted to be secured together so as to meet upon a plane substantiallycoincident with the axis of the pulley, the members being axially joinedtogether by screws, spot-welding, or any other approved means. Duringthe process of blanking and forming the members 13, the said members arepunched or otherwise shaped to provide pairs of opposed pockets 16located adjacent one another at the inner angles of the loops or pockets14. These recessed apertures or pockets 16 are of such shape that whenthe members 13 are brought together, the pulley pins 17 are securelygrasped between the opposed edges of the said pockets 16. The outeredges of the saidadjacent pairs of pockets 16 are so spaced apart as toloosely admit the ends of the pulley pins 17 while at the same timeforming abutments to limit the endwise movement of said pulley pins 17when the frame is assembled together. The pulleys 15 may be of any typesuitable for the particular purpose for which they are adapted, and saidpulleys may havedirect bearing on the pins 17, or, if desired, they canbe equipped with ball or roller bearings,

the latter being the case in the present instance. The rollers 18 may beseen from an inspection of the right-hand portion of Fig. 1, theserollers being limited in their endwise axial movement by circularwashers '19 slipped on each end of the pulley pin 17 adjacent the pulleyproper. It shouldbe noted that the recesses 16 are so constructed'as tocause the members 13 to be separated slightly when the latter arebrought together upon the pins 17; thus, when the said members areunited together their resiliency permits them to be pressed togetherinto engagement with each other and grasp the members 17 tightlybetween.

As previously referred to, the stile 12 may be removed so as to gainaccess to the weights and pulleys. This is accomplished by means of thescrews 20 which pass through a pair of hollow boxed-in flanges 21 formedon the front and back of the window casing, said screws engagingrelatively heavy straps or bars 22 secured to the in sides of thestiles. The screws 20 are prevented from coming out of the flanges 21 bymeans of retaining pins 23 driven in the screws just behind the saidflanges in such a position as to allow said screws to rotate freely,while preventing axial movement of the same. When first inserting thescrews 20 through the flanges 21, they areturned in such position thatthe pins 23 enter vertical slots 24:, the normal position of the screwswhen in adjusted position being that shown in Figs. 1 and 3 with theretaining pins horizontal. In order to remove the side stiles 12 thescrews 20 are first turned so as to move the side stiles 12 back anamount sufficient to disengage the interlocking weather ribs 25 from thesashes which are then removed; the screws are then withdrawn and theside stiles thus released are finally removed.

When the side stiles 12 are removed, access is obtained to the pulleyframe which is hung from the head 10 in the following manner: Referringto Fig. 3, it will be seen that over each pulley the head 10 is providedwith a rectangular slot 26 which is of such width as to admit the loopsor pockets 14: of the'pulley frame, and of a suitable length to admitthe pulley 15 and its associated chain freely. In the members 13 thereare punched three pairs of holes, 27, 28, 29, which register togetherwhen the members 13 are assembled and serve to admit the screws 30 whichalso pass through holes formed in the head 10 and engage rectangularnuts 31 carried on the upper side of the head. These nuts 31 are eitherpermanently secured to the upper surfaces of the head in proper registerwith the holes therein, or they may be loosely supported thereon,rotation being prevented by the fit of the said nuts in the channels 32,33 and 34. formed in the said head. It is obvious that in order toremove the pulley frame the only operation necessary is to remove thescrews 30 after which the pulley frame can be,

dropped vertically downward and removed.

From the above description it will be observed; that my improvedconstruction is well adapted to carry out in a simple and efficientmanner the objects previously set forth. It is also apparent that myconstruction is capable of being modified in certain of its detailswithout departing from the spirit of the invention, andthusI do not wishto be limited in the use of my invention, except as specified in theappended claims.

I claim:

1. In a pulley frame, thecombination of a pulley, a pair of resilientmating frame members provided with opposed adjacent faces locatedsubstantially. at the axis of said pulley, a shaft for said pulleyinterposed between said mating frame members and having its ends ofsuitable size 'to V slightly separate said mating frame members, andmeans for securing said mating frame members together to hold saidopposed.

adjacent faces of said mating members substantially in contact with eachother to resiliently grasp the ends of said shaft be tween said membersto prevent its rotation.

2. In a pulley frame, the combination of a rotatable pulley, a pair ofresilient similar mating frame members provided with op posed adjacentfaces located substantially.

at the axis of said pulley, a shaft for said pulley having twocylindrical ends interposed between said mating frame members,

said mating frame members belng suitably conformed to admit the ends ofsaid shaft and to interlock with said ends to prevent axial movement ofsaid shaft, said members being forced together in intimate contact witheach other to resiliently grasp said cylindrical ends and prevent rotarymovement of said shaft.

3. In a pulley bearing frame, the combination with the pulley, of arelatively stationary shaft therefor, and a pair of mating frame membersadapted to be secured together so as to completely surround said "pulleyand to meet substantially at the axis of said shaft, the said membersbeing formed with a pair of opposed recesses adapted to meet togetherand grasp the end of said shaft and prevent rotation thereof, saidmembers having interlocking engagement with said shaft to limit theendwise movement thereof.

4. In a pulley bearing member, the combination of a pulley, a relativelystationary shaft therefor, and a pair of similar pressed metal matingframe members adapted to be secured together and to meet atsubstantially the axis of said shaft, the said members being so shapedas to include and surround said pulley when secured together, and alsobeing provided with two pairs of opposed recesses adapted to engage theends of said shaft and prevent rotation thereof, the outer ends of saidrecesses forming abutments to limit the endwise movement of said shaftin said frame.

5. In a metal window frame, the combination of a head adapted to extendover the weightbox outwardly beyond the side stile of the window, saidhead being provided with an aperture therein, a pulley adapted to entersaid aperture, a frame for said pulley detachably hung from and securedto said head, and means for securing said frame to the extension to saidhead.

6. In a metal window frame, the combination of a head rigidly secured tothe frame and adapted to extend across between two outer side framemembers of said frame, said head being provided with apertures thereinover the weight-boxes, said apertures being adapted to admit the weightpulleys from the under side of said head, a pair of pulleys, and acommon frame support for said pulleys adapted to be hung from the underside of said head and cletachably secured thereto.

7. In a metal window frame, the com-- bination of a head rigidly securedto the frame and adapted to extend beyond the side stiles of the casingand across the weight boxes substantially to and between the two outerside frame members of said frame, said head being provided withapertures therein over the weight boxes adapted to admit theweightpulleys from the under side of said head, a pair of pulleys toenter said apertures, a common frame support for said pulleys, andscrews insertible from the under side of said head and within the weightboxes for detachably securing said common frame support to the underside of said head.

8. In a pulley bearing member, the com bination of a pulley, arelatively stationary shaft therefor and a pair of similarly formedpressed metal mating frame members adapted to completely surround saidpulley in a plane substantially at right angles with their mating plane,and adapted to be secured together and to meet at substantially the axisof said shaft, and also being provided with two pairs of opposedrecesses adapted to engage the ends of said shaft and prevent rotationthereof with reference to the frame, said frame members being providedat their ends adjacent the mating plane with interlocking engagementwith said shaft to prevent endwise movement thereof with reference tosaid mating frame members.

CYRIL A. SOANS, EMiLIE Rosn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0;

